Table 2.

Mercury (Hg) exposure by quartiles of selenium (Se) levels for the two Faroese birth cohorts

		Hg exposure levels (μg/L)
Se groups	N	Geometric mean	Interquartile range
Cohort 1
Quartile 1 (<100 μg/L)	211	16.1	9.6–29.9
Quartiles 2–3 (100–120 μg/L)	413	21.5	13.0–36.6
Quartile 4 (>120 μg/L)	275	32.9	20.1–56.6
Cohort 2
Quartile 1 (<93 μg/L )	35	15.8	9.0–34.1
Quartiles 2–3 (93–112 μg/L)	72	19.3	11.5–33.6
Quartile 4 (>112 μg/L)	35	29.8	16.0–49.5